【Backgronud】Oriental fruit fly, Bactrocera dorsalis, is one of quarantine pests targeted in the international fruit trade. Loquat is a famous fruit in Fujian where B.dorsalis is also present. For export of loquat fruit, treatments against B.dorsalis must be used. This study aimed to test the use of cold treatment as a way to reduce the issue of B.dorsalis during loquat exportation. 【Method】Sensitivity to cold tests, small scale disinfestation tests and large scale disinfestation tests were conducted with artificially inoculated eggs and larva of B.dorsalis in loquat fruits were treated to various temperatures and small and large scale disinfection and tested for sensitivity. 【Result】The results showed that the 2~3 mixed instar larvae were the most tolerant stages to low temperature. The fruit flies could be completely killed at 1.5 ℃ when exposed for 12 days. There was no damage on loquat fruit due cold temperature treatment. 【Conclusion and significance】Cold treatment can be used as a quarantine measure for B.dorsalis in loquat fruits.